package com.ThreadStudy.syn;

import java.util.concurrent.locks.ReentrantLock;

/*
*
* 测试lock锁
*
* */
public class LockTest {
    public static void main(String[] args) {
        TestLock2 testLock2 = new TestLock2();

        new Thread(testLock2).start();
        new Thread(testLock2).start();
        new Thread(testLock2).start();
    }


}



class TestLock2 implements Runnable{

    int tickNum = 10;

    // 定义lock锁

    private final ReentrantLock lock = new ReentrantLock();

    @Override
    public void run() {

        while (true){

            try{
                lock.lock(); // 加锁
                if(tickNum>0){
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    System.out.println(tickNum--);
                }else {
                    break;
                }
            }finally {
                lock.unlock(); // 解锁
            }


        }
    }
}




